Commit 3c75fac130 fixed the __restrict definition in sys/cdefs.h,
but uncovered a problem in the definition of lio_listio in Cygwin's
aio.h. It uses the C99 extension of using the restrict keyword
to define non-overlapping arrays. However, this is not allowed in
C++.
Use the newly defined __restrict_arr from commit e66c63be6b
("sys/cdefs.h: introduce __restrict_arr, as in glibc")
Fixes: 3c75fac130 ("sys/cdefs.h: fix for use __restrict in C++"
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Previously, though readahead buffer handling in pty master was not
fully thread-safe, accept_input() was called from peek_pipe() thread
in select.cc. This caused the problem reported in:
https://cygwin.com/pipermail/cygwin/2023-July/253984.html
The mechanism of the problem is:
1) accept_input() which is called from peek_pipe() thread calls
eat_readahead(-1) before reading readahead buffer. This allows
writing to the readahead buffer from another (main) thread.
2) The main thread calls fhandler_pty_master::write() just after
eat_readahead(-1) was called and before reading the readahead
buffer by accept_input() called from peek_pipe() thread. This
overwrites the readahead buffer.
3) The read result from readahead buffer which was overwritten is
sent to the slave.
This patch makes readahead buffer handling fully thread-safe using
input_mutex to resolve this issue.
Fixes: 7b03b0d8ce ("select.cc (peek_pipe): Call flush_to_slave whenever we're checking for a pty master.")
Reported-by: Thomas Wolff <towo@towo.net>
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
Per C++11, uchar16_t and uchar32_t are defined the same as
uint_least16_t and uint_least32_t. Also, check for the C++
version to make sure that the types are not colliding with
predefined c++ types.
Fixes: 4f258c55e8 ("Cygwin: Add ISO C11 functions c16rtomb, c32rtomb, mbrtoc16, mbrtoc32.")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
After the commit a4705d387f, printf() for floating-point values
causes a memory leak. The legacy _ldtoa_r() assumed the char pointer
returned will be free'ed by Bfree(). However, gdtoa-based _ldtoa_r()
returns the pointer returned by gdtoa() which should be free'ed by
freedtoa(). Due to this issue, the caller of _ldtoa_r() fails to free
the allocated char buffer. This is the cause of the said memory leak.
https://cygwin.com/pipermail/cygwin/2023-July/254054.html
This patch makes rv_alloc()/freedtoa() allocate/free the buffer in
a compatible way with legacy _ldtoa_r().
Fixes: a4705d387f ("ldtoa: Import gdtoa from OpenBSD.")
Reported-by: natan_b <natan_b@libero.it>
Reviewed-by: Corinna Vinschen <corinna@vinschen.de>
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
The FD_WRITE event is a false friend. It indicates ready to write
even if the next send fails with WSAEWOULDBLOCK. *After* the fact,
FD_WRITE will be cleared until sending is again possible, but that
is too late for a select/write loop.
Workaround that by using the WinSock select function when peeking
at a socket and FD_WRITE gets indicated. WinSock select fortunately
indicates writability correctly.
Fixes: 70e476d27b ("(peek_socket): Use event handling for peeking socket.")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This macro loads and defines a function just as usual, except
that the Windows function is exposed only with the prefix
_win32_. So Windows select (the immediate victim) is only
exposed as _win32_select. That allows to autoload the windows
function without collision with a Cygwin function of the same
name.
For a start, only define the most simple macro, setting all
extensions to 0.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Add uchar.h accordingly.
For the c32 functions, use the internal functions wirtomb and mbrtowi
as base, and convert wirtomb and mbrtowi to inline functions calling
the c32 functions.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
The changes to support GB18030 were insufficient and the underlying
Windows conversion functions just failed. Fix how the Windows functions
are called for GB18030.
Fixes: 5da71b6059 ("Cygwin: add support for GB18030 codeset")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Commit c743751aaf ("Cygwin: Export
posix_spawn_file_actions_add{f}chdir_np")
added two new functions but we forgot to bump the API version.
Catch up.
Fixes: c743751aaf ("Cygwin: Export posix_spawn_file_actions_add{f}chdir_np")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Commit c36064bbd0 introduced operating on character pointers
instead of operating on characters, to allow collating symbols.
This patch neglected to change the expression for range
comparison in case we're in the C locale. Thus it suddenly
compared pointers instead of characters. Fix that.
Fixes: c36064bbd0 ("Cygwin: fnmatch: support collating symbols in [. .] brackets")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
The extended _NL_foo names were originally designed after their GLibc
counterparts. However, the OUTDIGIT macros were accidentally defined as
OUTDIGITS, plural. Fix them.
Fixes: d47d5b850b ("Extend locale support to maintain wide char values of native strings")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
The GLIBC extension AT_EMPTY_PATH allows the functions fchownat
and fstatat to operate on dirfd alone, if the given pathname is an
empty string. This also allows to operate on any file type, not
only directories.
Commit fa84aa4dd2 broke this. It only allows dirfd to be a
directory in calls to these two functions.
Fix that by handling AT_EMPTY_PATH right in gen_full_path_at.
A valid dirfd and an empty pathname is now a valid combination
and, noticably, this returns a valid path in path_ret. That
in turn allows to remove the additional path generation code
from the callers.
Fixes: fa84aa4dd2 ("Cygwin: fix errno values set by readlinkat")
Reported-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Tested-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Convert gen_full_path_at to take flag values from the caller, rather
than just a bool indicating that empty paths are allowed. This is in
preparation of a better AT_EMPTY_PATH handling in a followup patch.
Reviewed-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
The check if the local variable p is NULL is useless. The preceeding
code always sets p to a valid pointer, or it crashes if path_ret is
invalid (which would be a bug in Cygwin).
Fixes: c57b57e5c4 ("* cygwin.din: Sort.")
Reviewed-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
A more sophisticated (and modern) test harness would probably be useful,
but switching to Automake's built-in test harness gets us parallel test
execution, colourization of failures, simplifies matters, seems adequate
for the current testuite, and means we don't need to write any icky Tcl.
Signed-off-by: Jon Turney <jon.turney@dronecode.org.uk>
When creating the POSIX ACL rewrite, the code merging permissions from
everyone/group to group/user ACEs was accidentally called for newly
generated files as well.
This could result in broken permissions, if umask used unusual values
like "0100", granted permissions to everyone/group not granted to
group/user.
Make sure to skip permission merging if the file got just created and
we only want to set correct permissions for the first time.
Fixes: bc444e5aa4 ("Reapply POSIX ACL changes.")
Reported-by: Jon Turney <jon.turney@dronecode.org.uk>
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Move strace output to fix uninitalized use of fh introduced in previous commit.
../../../../src/winsup/cygwin/syscalls.cc: In function ‘int stat_worker(path_conv&, stat*)’:
../../../../src/winsup/cygwin/syscalls.cc:1971:69: error: ‘fh’ may be used uninitialized [-Werror=maybe-uninitialized]
Fixes: 42b44044b3 ("Cygwin: Fix Windows file handle leak in stat("file", -1)")
Signed-off-by: Jon Turney <jon.turney@dronecode.org.uk>
Don't leak a Windows file handle if stat() is called with a valid
filename, but invalid stat buffer pointer.
We do not destroy fh (which closes a Windows handle it has opened) if an
exception happens in the __try block.
Avoid this by re-ordering things so that we don't construct the fhandler
object until after we've attempted to use the struct stat buffer.
Fixes: 73151c54d5 ("syscalls.cc (stat_worker): Don't call build_fh_pc with invalid pc.")
Signed-off-by: Jon Turney <jon.turney@dronecode.org.uk>
Drop setting TDIRECTORY, just use /tmp in the 'test installation' now
that we have it.
This effectively reverts f3ed5f2fe0
Signed-off-by: Jon Turney <jon.turney@dronecode.org.uk>
Starting with commit 42faed4128 ("* thread.h (class pthread): Add bool
member canceled."), pthread::testcancel waits infinitely on cancel_event
after it checked if the canceled variable is set. However, this might
introduce a deadlock, if the thread calling pthread_cancel is terminated
after setting canceled to true, but before calling SetEvent on cancel_event.
In fact, it's not at all necessary to wait infinitely. By definition,
the thread is only canceled if cancel_event is set. The canceled
variable is just a helper to speed up code. We can safely assume that
the thread hasn't been canceled yet, if canceled is set, but cancel_event
isn't.
Fixes: 42faed4128 ("* thread.h (class pthread): Add bool member canceled.")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Despite our efforts, sometimes the async cancellation gets deferred.
Notice this by calling pthread_testcancel(), and then try to work out if
async cancellation was ever successful by checking if all threads ran
for the full expected time, or if some were stopped early.
Also, increase the time we allow for the async cancellation to get
delivered to 30 seconds.
Signed-off-by: Jon Turney <jon.turney@dronecode.org.uk>
Add back the restoration of signal handlers modified during system() on
thread cancellation.
Removed in 3cb9da14 which describes it as 'ill-conceived' (additional
context doesn't appear to be available).
We use the internal implementation helpers for the pthread cleanup
chain, so we can neatly tuck it inside the object, and keep the point
when we restore the signal handlers the same. (The
pthread_cleanup_push/pop() functions are implemented as macros which
must appear in the same lexical scope.)
Fixes: 3cb9da1461 ("Put signals on hold and use system_call_cleanup
class to set and restore signals rather than doing it prior to to
running the program. Remove the ill-conceived pthread_cleanup stuff.")
Signed-off-by: Jon Turney <jon.turney@dronecode.org.uk>
Take note of schedparam in any pthread_attr_t passed to pthread_create.
postcreate() (racily, after the thread is actually created), sets the
scheduling priority if it's inherited, but precreate() doesn't store any
scheduling priority explicitly set via a non-default attr to
pthread_create, so schedparam.sched_priority has the default value of 0.
(I think this is another long-standing bug exposed by 4b51e4c1. Now we
don't lie about the actual thread priority, it's apparent it's not
really being set in this case.)
Fixes testcase priority2.
Signed-off-by: Jon Turney <jon.turney@dronecode.org.uk>
Test access05 and symlink03 expect operations to fail which succeed when
we have Adminstrator privileges.
There's perhaps a bit of incoherency here: some XFAILed tests expect to
run as root (so maybe we need the ability to selectively cygdrop?).
Signed-off-by: Jon Turney <jon.turney@dronecode.org.uk>
Change TCIDs to they match the filename
Fix use of "%0" rather than "%o"
Record failure on mismatched permissions, rather than immediately breaking
See ltp commits fa31d55d, 923b23ff and b846e7bb
fa31d55d34923b23ff1fb846e7bb9c
Signed-off-by: Jon Turney <jon.turney@dronecode.org.uk>
full_path needs to hold a overlong pathname of length PATH_MAX+1, plus a
terminating null.
See ltp commit 44d51c3f
44d51c3f06
Signed-off-by: Jon Turney <jon.turney@dronecode.org.uk>
These tests async thread cancellation of a thread that doesn't have any
cancellation points.
Unfortunately, since 2b165a45 the async cancellation silently fails when
the thread is inside the kernel function Sleep(), so it just exits
normally after 10 seconds. (See the commentary in pthread::cancel() in
thread.cc, where it checks if the target thread is inside the kernel,
and silently converts the cancellation into a deferred one)
Work around this by busy-waiting rather than Sleep()ing for 10 seconds.
This is still somewhat fragile: the async cancel could still fail, if it
happens to occur while we're inside the kernel function that time()
calls.
v2:
Do nothing more efficiently
Signed-off-by: Jon Turney <jon.turney@dronecode.org.uk>
Since commit 4b51e4c1, we return the actual thread priority, not what we
originally stored in the thread attributes.
Windows only supports 7 thread priority levels, which we map onto the 32
required by POSIX. So, only a subset of values will be returned exactly
by by pthread_getschedparam() after pthread_setschedparam().
Adjust tests priority1, priority2 and inherit1 so they only check for
round-tripping priority values which can be exactly represented.
For CI, this needs to handle process priority class "below normal
priority" as well.
Also check that the range of priority values is at least 32, as required
by POSIX.
Signed-off-by: Jon Turney <jon.turney@dronecode.org.uk>
Check direct call to system(), as well as one in a subprocess.
(This is a lot easier to debug when it's completely broken by the
environment the test is running in)
Signed-off-by: Jon Turney <jon.turney@dronecode.org.uk>
Astonishingly, we don't have this already, so tests which hang just stop
the testsuite dead in it's tracks...
Signed-off-by: Jon Turney <jon.turney@dronecode.org.uk>
Do some setup in the Cygwin 'installation' at testsuite/testinst/:
* Ensure /tmp exists
* Use BusyBox to provide executables needed by tests which use system()
(sh, sleep, ls)
This enables tests which use system(), or require /tmp to exist to pass.
Signed-off-by: Jon Turney <jon.turney@dronecode.org.uk>
The current version of <sys/cpuset.h> cannot be compiled by Clang due to
the use of builtin versions of malloc, free, and memset. Their presence
here was a dubious optimization anyway, so their usage has been
converted to standard library functions.
The use of __builtin_popcountl remains because Clang implements it just
like gcc does. If/when some other compiler (Rust? Go?) runs into this
issue we can deal with specialized handling then.
The "#include <sys/cdefs>" here to define __inline can be removed since
both of the new includes sub-include it.
Addresses: https://cygwin.com/pipermail/cygwin/2023-July/253927.html
Fixes: 9cc910dd33a5 (Cygwin: Make <sys/cpuset.h> safe for c89 compilations)
Signed-off-by: Mark Geisert <mark@maxrnd.com>
While st_rdev returned by fstat() for /dev/tty should be FH_TTY,
the current cygwin1.dll returns FH_PTYS+minor or FH_CONS+minor.
Similarly, fstat() does not return correct value for /dev/console,
/dev/conout, /dev/conin or /dev/ptmx.
This patch fixes the issue by:
1) Introduce dev_referred_via in fhandler_termios.
2) Add new argument, which has dev_t value referred by open(),
for constructors of fhandler_pty_slave and fhandler_pty_master to
set the value of dev_referred_via.
3) Set st_rdev using dev_referred_via in fhandler_termios::fstat()
if it is available.
Reviewed-by: Corinna Vinschen <corinna@vinschen.de>
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
As reported in
https://cygwin.com/pipermail/cygwin/2023-June/253888.html,
"Bad address" error occurs when stat() is called after the commit
3721a756b0 ("Cygwin: console: Make the console accessible from
other terminals.").
There are two problems in the current code. One is fhandler_console::
fstat() calls get_ttyp()->getsid(). However, fh_alloc() in dtable.cc
omits to initialize the fhandler_console instance when stat() is
called. Due to this, get_ttyp() returns NULL and access violation
occurs. The other problem is fh_alloc() assigns fhandler_console
even if the CTTY is not a console. So the first problem above occurs
even if the CTTY is a pty.
This patch fixes the issue by:
1) Call set_unit() to initialize _tc if the get_ttyp() returns NULL.
2) Assign fhandler_pty_slave for /dev/tty if CTTY is a pty in fh_alloc().
Fixes: 3721a756b0 ("Cygwin: console: Make the console accessible
from other terminals.").
Fixes: 23771fa1f7 ("dtable.cc (fh_alloc): Make different decisions
when generating fhandler for not-opened devices. Add kludge to deal
with opening /dev/tty.")
Reported-by: Bruce Jerrick <bmj001@gmail.com>
Reviewed-by: Corinna Vinschen <corinna@vinschen.de>
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
Four modifications to include/sys/cpuset.h:
* Change C++-style comments to C-style also supported by C++
* Change "inline" to "__inline" on code lines
* Add "#include <sys/cdefs.h>" to make sure __inline is defined
* Don't declare loop variables on for-loop init clauses
Tested by first reproducing the reported issue with home-grown test
programs by compiling with gcc option "-std=c89", then compiling again
using the modified <sys/cpuset.h>. Other "-std=" options tested too.
Addresses: https://cygwin.com/pipermail/cygwin-patches/2023q3/012308.html
Fixes: 315e5fbd99ec ("Cygwin: Fix type mismatch on sys/cpuset.h")
Signed-off-by: Mark Geisert <mark@maxrnd.com>
Currently, _my_tls.tid is set to pthread_null if pthread::self()
is called before pthread::init_mainthread(). As a result, pthread::
init_mainthread() does not set _my_tls.tid appropriately. Due to
this, pthread_join() fails in LDAP environment if the program is
the first program which loads cygwin1.dll.
https://cygwin.com/pipermail/cygwin/2023-June/253792.html
With this patch, _my_tls.tid is re-initialized in pthread::
init_mainthread() if it is pthread_null.
Reported-by: Mümin A. <muminaydin06@gmail.com>
Reviewed-by: Corinna Vinschen <corinna@vinschen.de>
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
In test for AMD/Intel Control flow Enforcement Technology user mode
shadow stack support replace Windows version tests with test of wincap
member addition has_user_shstk with Windows version dependent value
Fixes: 41fdb869f9 ("fhandler/proc.cc(format_proc_cpuinfo): Add Linux 6.3 cpuinfo")
Signed-off-by: Brian Inglis <Brian.Inglis@Shaw.ca>
In the very early code path where `dll_crt0_1 ()` calls
`user_shared->initialize ()`, the Cygwin runtime calls `internal_pwsid ()`
to initialize the user name in preparation for reading the `fstab` file.
In case `db_home: env` is defined in `/etc/nsswitch.conf`, we need to
look at the environment variable `HOME` and use it, if set.
When all of this happens, though, the `pinfo_init ()` function has had no
chance to run yet (and therefore, `environ_init ()`). At this stage,
therefore, `getenv ()`'s `findenv_func ()` call still finds `getearly ()`
and we get the _verbatim_ value of `HOME`. That is, the Windows form.
But we need the "POSIX" form.
To add insult to injury, later calls to `getpwuid (getuid ())` will
receive a cached version of the home directory via
`cygheap->pg.pwd_cache.win.find_user ()` thanks to the first
`internal_pwsid ()` call caching the result via
`add_user_from_cygserver ()`, read: we will never receive the converted
`HOME` but always the Windows variant.
So, contrary to the assumptions made in 27376c60a9 (Allow deriving the
current user's home directory via the HOME variable, 2023-03-28), we
cannot assume that `getenv ("HOME")` returned a "POSIX" path.
This is a real problem. Even setting aside that common callers of
`getpwuid ()` (such as OpenSSH) are unable to handle Windows paths in the
`pw_dir` attribute, the Windows path never makes it back to the caller
unscathed. The value returned from `fetch_home_env ()` is not actually
used as-is. Instead, the `fetch_account_from_windows ()` method uses it
to write a pseudo `/etc/passwd`-formatted line that is _then_ parsed via
the `pwdgrp::parse_passwd ()` method which sees no problem with
misinterpreting the colon after the drive letter as a field separator of
that `/etc/passwd`-formatted line, and instead of a Windows path, we now
have a mere drive letter.
Let's detect when the `HOME` value is still in Windows format in
`fetch_home_env ()`, and convert it in that case.
For good measure, interpret this "Windows format" not only to include
absolute paths with drive prefixes, but also UNC paths.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
The account under which Azure Web Apps run is an IIS APPOOL account that
is generated on the fly.
These are special because the virtual machines on which thes Apps run
are not domain-joined, yet the accounts are domain accounts.
To support the use case where such a Web App needs to call `ssh` (e.g.
to deploy from a Git repository that is accessible only via SSH), we do
need OpenSSH's `getpwuid (getuid ())` invocation to work.
But currently it does not. Concretely, `getuid ()` returns -1 for these
accounts, and OpenSSH fails to find the correct home directory
(_especially_ when that home directory was overridden via a `db_home:
env` line in `/etc/nsswitch.conf`).
This can be verified e.g. in a Kudu console (for details about Kudu
consoles, see https://github.com/projectkudu/kudu/wiki/Kudu-console):
the domain is `IIS APPPOOL`, the account name is the name of the Azure
Web App, the SID starts with 'S-1-5-82-`, and
`pwdgrp::fetch_account_from_windows()` runs into the code path where
"[...] the domain returned by LookupAccountSid is not our machine name,
and if our machine is no domain member, we lose. We have nobody to ask
for the POSIX offset."
Since these IIS APPPOOL accounts are relatively similar to AzureAD
accounts in this scenario, let's imitate the latter to support also the
former.
Reported-by: David Ebbo <david.ebbo@gmail.com>
Helped-by: Corinna Vinschen <corinna@vinschen.de>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
The commit 9fc746d17d does not fix transferring input at exit
appropriately. If the more than one non-cygwin apps are executed
simultaneously and one of them is terminated, the pty master failed
to send input to the other non-cygwin apps. This patch fixes that.
Fixes: 9fc746d17d ("Cygwin: pty: Fix transferring type-ahead input between input pipes.")
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
After the commit e5fcc5837c, transferring type-ahead input between
the pipe for cygwin app and the pipe for non-cygwin app will not be
done appropriately when the stdin of the non-cygwin app is not pty.
Due to this issue, sometimes the keyboard input might be lost which
should be sent to cygwin app. This patch fixes the issue.
Fixes: e5fcc5837c ("Cygwin: pty: Fix reading CONIN$ when stdin is not a pty.")
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
Reportedly Windows 11 build 25*** from Insider changed the current
working directory logic a bit, and Cygwin's "magic" (or:
"technologically sufficiently advanced") code needs to be adjusted
accordingly.
This fixes https://github.com/git-for-windows/git/issues/4429
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
cpuid 0x00000007:0 ecx:7 shstk Shadow Stack support & Windows [20]20H1/[20]2004+
=> user_shstk User mode program Shadow Stack support
AMD SVM 0x8000000a:0 edx:25 vnmi virtual Non-Maskable Interrrupts
Sync AMD 0x80000008:0 ebx flags across two output locations
This solves redefinition of FILE_CS_FLAG_CASE_SENSITIVE_DIR in winnt.h
and fixes the following compiler errors
ntdll.h:523:3: error: expected identifier before numeric constant
523 | FILE_CS_FLAG_CASE_SENSITIVE_DIR = 0x01
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ntdll.h:522:1: note: to match this ‘{’
522 | {
| ^
When the @cjkwide and @cjksingle modifiers have been added, the
patches missed to add checks for the new modifiers in the Cygwin
locale code. Along the same lines, commit c3e7f7609e forgot to
add a test for @cjksingle.
Merge check for cjk* modifiers into a macro set andf use that
throughout. Fix comments.
Fixes: f92f048528 ("Locale modifier @cjkwide to adjust ambiguous-width in non-CJK locales")
Fixes: c8204b1069 ("Locale modifier "@cjksingle" to enforce single-width CJK width.")
Fixes: c3e7f7609e ("Cygwin: locales: fix behaviour for @cjk* and @euro locales")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Per the discussion starting with
https://cygwin.com/pipermail/cygwin/2023-April/253495.html
stop falling back to sh if the file given to posix_spawnp
is no executable.
This is not necessarily the last word on it, given
https://www.austingroupbugs.net/view.php?id=1674, but for now,
opt for following the proposal in the Austin Group bug entry,
as well as PASSing the GNULIB test-posix_spawnp-script test.
Fixes: c7c1a1ca1b ("Add support for new posix_spawn function.")
Fixes: 3fbfcd11fb ("Cygwin: posix_spawn: add Cygwin-specific code fixing process synchronisation")
Reported-by: Bruno Haible <bruno@clisp.org>
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
mbrtowi was missing null-checks on pwi, but NULL is passed from
regex/engine.c:173.
In a git repo with sendemail.smtpserver set, this results in a segfault when
using git-send-email, which calls:
git config --get-regexp '^sende?mail[.]'
Fixes: 60c25da90d ("Cygwin: mbrtowi: define replacement for mbrtowc, returning UTF-32 value")
Signed-off-by: David McFarland <corngood@gmail.com>
In contrast to rename default behaviour, Linux' renameat2 returns -1
with errno set to EEXIST, if oldfile and newfile refer to the same
file, and the RENAME_NOREPLACE flag is set.
Follow suit, given this is a Linux-only function anyway.
Fixes: f665b1cef3 ("cygwin: Implement renameat2")
Reported-by: Bruno Haible <bruno@clisp.org>
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
readlinkat(fd, "", ...) is supposed to return ENOENT per POSIX,
but Cygwin returns EBADF.
At the same time, we have to maintain the special feature of
glibc that readlinkat(fd, "", ...) operates on fd, if fd is pointing
at a symlink opened with O_PATH|O_NOFOLLOW.
And, while fixing that, readlinkat(fd, path, ...) *still* has to set errno
to EBADF, if fd is an invalid descriptor *and* path is a relative path.
This required to change the evaluation order in the helper function
gen_full_path_at.
Last but not least, in case of the aforementioned glibc-like special
handling for symlink descriptors, we have to make sure that errors from
gen_full_path_at are not spilled into that special handling.
Fixes: 6cc05784e1 ("Cygwin: readlinkat: allow pathname to be empty")
Reported-by: Bruno Haible <bruno@clisp.org>
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2f9b8ff0 introduced a problem where forks would sometimes fail with:
child_copy: cygheap read copy failed, 0x0..0x80044C750, done 0, windows pid 14032, Win32 error 299
When cygheap_max was > CYGHEAP_STORAGE_INITIAL, commit_size would be set to
allocsize(cygheap_max), which is an address, not a size. VirtualAlloc would be
called to commit commit_size bytes, which would fail, and then child_copy would
be called with zero as the base address.
Fixes: 2f9b8ff00c ("Cygwin: decouple cygheap from Cygwin DLL")
Signed-off-by: David McFarland <corngood@gmail.com>
Previously, the pty master sends inputs to the pipe for cygwin app
even when pseudo console is activated if stdin is not the pty.
This causes the problem that key input is not sent to non cygwin
app even if the app opens CONIN$. This patch sets switch_to_nat_pipe
to true regardless whether stdin is the pty or not to allow that case.
https://cygwin.com/pipermail/cygwin/2023-April/253424.html
Reported-by: Wladislav Artsimovich <cygwin@frost.kiwi>
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
Preconditions of WSL or empty directories dependent on Windows
versions was totally screwed up. Drop the description from
--help, describe the preconditions for case-sensitive dirs in the
man page instead.
Fixes: fc6e89c937 ("Cygwin: chattr: clarify requirements for casesensitive directories")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
We should not blindly set the home directory of the SYSTEM account (or
of Microsoft accounts) to `/home/<name>`, especially
`/etc/nsswitch.conf` defines `db_home: env`, in which case we want to
respect the `HOME` variable.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Per https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/xbd_chap04.html:
"A pathname that begins with two successive slashes may be interpreted
in an implementation-defined manner, although more than two leading
slashes shall be treated as a single slash."
So more than 2 leading slashes are supposed to be folded into one,
which our dirname neglected. Fix that.
Fixes: 24e8fc6872 ("* cygwin.din (basename): Export.")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This patch hails from Git for Windows (where the Cygwin runtime is used
in the form of a slightly modified MSYS2 runtime), where it is a
well-established technique to let the `$HOME` variable define where the
current user's home directory is, falling back to `$HOMEDRIVE$HOMEPATH`
and `$USERPROFILE`.
The idea is that we want to share user-specific settings between
programs, whether they be Cygwin, MSYS2 or not. Unfortunately, we
cannot blindly activate the "db_home: windows" setting because in some
setups, the user's home directory is set to a hidden directory via an
UNC path (\\share\some\hidden\folder$) -- something many programs
cannot handle correctly, e.g. `cmd.exe` and other native Windows
applications that users want to employ as Git helpers.
The established technique is to allow setting the user's home directory
via the environment variables mentioned above: `$HOMEDRIVE$HOMEPATH` or
`$USERPROFILE`. This has the additional advantage that it is much
faster than querying the Windows user database.
Of course this scheme needs to be opt-in. For that reason, it needs
to be activated explicitly via `db_home: env` in `/etc/nsswitch.conf`.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
- Windows 10 requires WSL
- Windows 11 only allows enabling casesensitivity if dir is empty
Fixes: 0d4b39d37b ("Cygwin: Add lsattr and chattr tools")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Latest Windows supports more EU locales than GLibc, so some of the
@euro locales are not covered by checking the GLibc locale defaults.
Those locales have no long history, they are all UTF-8. So just
check for @euro in the UTF-8 case and set them to ISO-8859-15.
Fixes: 2483e54be8 ("Cygwin: locale: Set default charset from Linux locale -> codeset mapping")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
@cjknarrow and @cjkwide modifiers are newlib only, so they need
some tweaking in __set_charset_from_locale.
Fixes: 2483e54be8 ("Cygwin: locale: Set default charset from Linux locale -> codeset mapping")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Drop usage of newlocale/nl_langinfo_l/freelocale.
Call __set_charset_from_locale instead, and make sure to call it
with modifier, if any, otherwise suffer wrong results.
Fixes: c42b98bdc6 ("Cygwin: introduce /proc/codesets and /proc/locales")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
ResolveLocaleName does not simply return an error value if it
can't resolve a locale. Rather, it returns an empty string and
the length of this string: 1.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This reverts commit 15898b9588.
The idea behind this patch was wrong. Systems are supposed to
support iso639-only strings as settings for the locale environment
variables, and they are not necessarily available in the
/usr/share/locale/locale.alias file.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
The Windows function ResolveLocaleName is next to useless to
convert a partial locale identifier into a full, supported
locale identifier. It converts anything which vaguely resembles
a locale into some other locale it supports.
Bad examples are:
"en-XY" gets converted to "en-US", and worse,
"ff-BF" gets converted to "ff-Latn-SN", even though "ff-Adlm-BF"
exists!
To check if a locale is supported, we have to enumerate all valid
Windows locales, and return the match, even if the locale in Windows
requires a script. Implement resolve_locale_name() as replacement
function for ResolveLocaleName.
Fixes: e95a7a7955 ("Cygwin: convert Windows locale handling from LCID to ISO5646 strings")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This was incorrect behaviour. The only valid way to support those
is by adding them to /usr/share/locale/locale.alias.
Fixes: e95a7a7955 ("Cygwin: convert Windows locale handling from LCID to ISO5646 strings")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This allows newlocale to return with a valid errno if the
locale is invalid.
Fixes: e95a7a7955 ("Cygwin: convert Windows locale handling from LCID to ISO5646 strings")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
The sr_XY locales are supposed to default to cyrillic, but the code
always attached a @cyrillic, same reason as in the previous commit.
Special case "sr" further to workaround that issue.
Fixes: c42b98bdc6 ("Cygwin: introduce /proc/codesets and /proc/locales")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Due to the way locales are evaluated in Windows, we can't ask for
the script of the "sd-IN" locale, because Windows only knows the
"sd-Deva-IN" locale. So asking for the script of the "sd" locale
returns "Arab;", because "sd" is converted to "sd-Arab-PK".
Special case "sd-IN" to workaround that issue.
Fixes: c42b98bdc6 ("Cygwin: introduce /proc/codesets and /proc/locales")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Renaming files returns STATUS_INVALID_PARAMETE on a bind mounted file system
in hyper-v container with FILE_RENAME_POSIX_SEMANTICS.
Disable the use_posix_semantics flag and retry.
Signed-off-by: Yoshinao Muramatsu <ysno@ac.auone-net.jp>
Deleting files returns STATUS_INVALID_PARAMETE on a bind mounted file system
in hyper-v container with FILE_DISPOSITION_POSIX_SEMANTICS.
Therefore fall back to default method.
This code is suggested by Johannes Schindelin on github
and I change it more simple.
Signed-off-by: Yoshinao Muramatsu <ysno@ac.auone-net.jp>
If a host NTFS is mapped into a Hyper-V isolated container, the
OPEN_BY_FILE_ID filesystem flag is missing, just as if that NTFS
is a remote drive. However, NtQueryVolumeInformationFile claims
the drive is a local drive.
We can use this fact to learn that the process is running under
Hyper-V, and that the Hyper-V isolated process can't use rename/unlink
with POSIX semantics. Strange enough, the POSIX_UNLINK_RENAME filesystem
flag is still set...
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
These flags are used to check a remote filesystem. Not all
flags supported by a local NTFS are available when checking
a remote NTFS. Fix the flag set accordingly, otherwise
the remote NTFS will ba handled as CIFS.
Fixes: fcccdc4021 ("Cygwin: fs_info: update filesystem flags and check Windows 7 flags")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Except for the "C" or "POSIX" locale, checking for start <= finish
is always wrong. Range start must be <= range finish in terms of the
locale's collating order. So make sure to call always wcscoll(), even
in the "C"/"POSIX" locale, which makes wcscoll equivalent to wcscmp
anyway.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
computejumps() moves g->charjump to a position relativ to the value of
CHAR_MIN. As such, g->charjump doesn't necessarily point to the address
actually allocated. While regfree() takes that into account, the low
memory handling in regcomp_internal() doesn't. Fix that by free'ing
the actually allocated address, as in regfree().
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Useless indirection. Rename _unlink_nt back to unlink_nt
and call the function directly with `sharable' flag as needed.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Update the list of filesystem flags to the flags supported since
Windows 7. Make sure to use the new flags only with Windows
filesystems, not with 3rd party filesystems.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Corinna Vinschen
Jon Turney
Takashi Yano
Mark Geisert
Brian Inglis
Philippe Cerfon
Johannes Schindelin
Biswapriyo Nath
David McFarland
Yoshinao Muramatsu